Radlator core



C. F. SPERY.

RADIATOR CORE.

APPLICATION -HLED AUG.1,1921.

1,434,853, Patented Nov. 7, 1922.

Fi Q7 EHHRLEE F. EFERY BY Mm @Mm H/S HTTURNEY' Passed Nov. i',Y 192.2.

UNITED STATES CHARLES F. SPEBY, 0F CHICAGO, ILLINOIS.

RADIATOR CORE.

Application tiled August 1, 1921. Serial No. 488,969.

To all 'whom t may concern Be it known that I, CHARLES F. Srnnr, a

citizen of the United States, residing at Uhr cago, in the county of(.ook and State of Illinois, have invented new and useful Improvementsin Radiator Cores, of wh-ich the following is a specification.

This invention' has relation to radiators for watercooled internalcombustion engines, such as are commonly used on self propelledvehicles.

The object of the present invention is the provision of a radiator coreof simplicity, of inexpensive construction, and of great eiiiciency.More particularly my aim is to provide a series of members for mixingand deliecting the air which passes through the radiator core. To thisend-1ny invention consists in the combinations and constructions setforth in the following description and indicated in the annexed drawing,of which:

Fig. l illustrates, in front elevation, a portion of a radiator coreembodying the invention,

Fi 2 shows a frame unit, a number of whic combine to formi the structureof Fi l,

i 3 is a side elevation of one of the memers which combine to form thewater channels of the structure,

Fig. l is a cross sectional view of one of the water channels,

Figs. 5 and 6 are views of one of the deieotors of the device, and

Fig. 7 is a cross sectional view taken substantially on a line A-A ofFig. 5, and

Fig. 8 shows a modified form of deilector.

The type of radiator herein considered is made with a series' ofvertically disposed water channels 1, each of which, when viewed invertical cross section as shown in Fig. 4, presents a water passa-ge ofa corrugated contour. In order to obtain such water channels I -haveprovided a series of frames comprising corrugated strips 2 and 3, andthese strips are suitably combined, vas by top and bottom lock seams 4fand 5. W hen two such frames are assembled side by side the waterpassage of Fig. 4 is produced, and it is noticed that the side 2 of oneframe abuts the side 3 of the next followin frame, and that the pair ofabutting sides orm the channel.

Fig. 3 discloses the face of the` frame side 2, and' it is to be notedthat the shape is the same as the frame side 3, but in reversedrelation. Ihe frame side is made from a strlp o f thm metal hexagonallycorrugated, and it 1s noticed that the inner apices of the corrugations,2a, are entirely flat, but that the lnclined surfaces 2b and the out-erapices 2 are provided with depressions, which depressions commence ashort distance from 'the edges of the metal strip. The strip 3 is, asstated, similarly shaped in reverse relation, whereby the fiat apex ofone is placed opposite the depressed apex of the other, as indicated inFig. 4, and the water passage is thereby provided, but it is alsoimportanti to note that the hexagonal bands along the edges of bothstrips Contact, as indicated by the dotted outline 6 in Fig. 4, andthese bands are soldered together in order to provide a water tightwat-er channel.

The structure just described is known to the art to provide a veryefficient radiator core, of the type referred to, particularly in casemeans can be introduced whereby the air ovving through the radiator corecan be directed toward and thrown against the sides of the waterchannels. In order to obtain such result I have placed a deflectingmember 7 within each frame 2, 3, as indicated in Fig. l. rlhis member ismade from a thin strip of sheet metal corresponding in width to thestrips 2 and 3, and it is made with corresponding border bands ofsemihexagonal con-tour, whereby, when the core is assembled, its frontand rear faces are caused to present hexagonally cellular shapes,closely resemblin a honey comb.

The deiector 7, see a so Figs. 5, 6, 7, is made with a series of coneshaped protuberances 7b, 7, which are arranged in alternately reversedrelation both lengthwise and crosswise of the strip, and rising from theopposite surfaces 7a toa uniform height. As the semihexagonal bands 70,7t rise on both sides substantially to the same height it is seen thatvery little of the original surface of the strip remains, and thatpractically the entire strip is uniformly protruded in oppositedirections. This is important to note, because any lack of uniformityhas a tendency to distort the metal, making it much more dicult andexpensive to roll the strip into the desiredshape. Upon examining Fig. 8it is noticed that octagonal pyramids 9a, 9b rise from the defiectorsurface in opposite directions, and that they are similarly spaced. Itis not very material whether these protuberances are cone shaped orpyramidal so far as the operation of. the device is concerned, but inboth cases 1t 1s important to note the relation which the protuberancestake to the corrugated contour of t-he water channels. This relation isbest shown in Fig. 1, and it is noticed that t he apices of the conesproject into the cavities of the adjacent water channel corrugatlons.

lit remains to be explained wherein the hereinbcfore described shapesand members (zo-operate to increase the eflie-iency of a structure ofthis character, and for this purpose reference is invited to Fig. Let itbe assumed that the left side of this View, where the arrow appears,represent the front of the radiator, and that the vehicle, on which theradiator is -mounted to operate, is in motion in forward direction.Relatively speaking the air is caused to rush through the core from thefront. It is now seen that the air which enters through thecorrugations, such as the corrugation 10, immediately strikes a cone 7b,whereby it is directed upward and deflected sidewise and thrown againstthe adjacent channel side. It .may be suggested that the air will alsopass downward, and so it may, but as the air commences to absorb heatthe moment it strikes the core it is more likely to rise thany to sink.The air passing the said cone 7b is now free to rise diagonally upwardthrough the depression 11 formed between two diagonal rows of cones, andto escape through the semihexagonal passage 12. During this travel theair strikes the second and third cone, and in so doing it is thrownagainst the channel sides with great force a number of times, whereas,if only diagonal ribs were provided, the air would strike only once andthen pass through the diagonal passage of such ribbed member. And it iswell known to those versed in the art that the more often the air can bemade to strike the channel sides, the more thorough is also the heatabsorption.

There is another important feature in this construction. Careful testshave shown me that, where a deflector having diagonal ribs and channelsbetween such ribs are used, the air encounters too much friction andbecomes choked, which of course is undesirable. In the structure of myinvention, on the other hand, it is seen that the air entering throughthe passa e 10 may strike both the top and bottom inc ines of the firstcone 7b, that it then may pass rearward and strike the bottom and topinclines of the next following` cones 13, 14, finally to strike the rearcone 15 before escaping through the corrugation 16. In other words, theair is free to find its way in any direction it is inclined to How, andas it rushes through the radiator core it' is compelled to strike thevinclined sides of a plurality of cones, and thereby to be thrown wit-hforce against the channel sides repeatedly. The more thoroughly the airbecomes mixed, and the more often it is thrown against the sides of thewater channels, the more efficient the radiator is found to be, hencethe importance of the hereinbefore described structure, in which arecombined elements to produce these results in a. very thorough manner.

It is necessary to provide means for temporarily retaining the partsof.v the core in alinement during the assembling operation, and prior tothe usual soldering process. [for this purpose I have placed elongatedribs 18, 19 on the fiat apices 2a of the channel members 2, and, ofcourse, similar ribs in the members 3. The center row of cones 7b of thedelector 7 engage the said ribs of the member 2, and the reversed cones7 engage in the same manner the ribs of the member 3. In order toindicate this construct-ion it is noticed that the deflector member atthe extreme left of Fig. l is shown cut, substantially through thevertical center. It is common to eXtrudel semicircular buttons forlocating purposes in structures of this kind, but it is readily seenthat the apex of a cone, in this structure, would not find a very secureposition between such buttons. Another objection to the buttons, ifplaced within the bands, is that they do not receive any of the solderused for combining and making the core watertight, and as the metaloften is slightly torn in extruding said buttons, it follows that theradiator core will leak at such point. The extrusion of the long rib ofthe present structure, on the other hand, may be done with safetybecause the rise of the rib from end to end can be long and gentle. Itmay be asked why the metal does not tear transversely of the rib, andthe answer is, that all sheet metal of the kind used for devices of thiskind will stand much bending and stretching across the grain of themetal, but not much longitudinally. For these reasons the long locatingribs of my invention are of importance.

I claim:

1. In a radiator core, the combination with vertically disposed waterchannels, semihexagonally corrugated, of a deflector mountable betweeneach adjacent pair of water channels, said deflectors having cone yshaped protuberances diagonally varranged .in alternate series inopposite directions and extending into the cavities of the water channelcorrugations.

2. In a honey comb radiator core, the combination with a series offrames, each comprising two semihexagonally formed strips of thin metalassembled in spaced relation the adjacent frame sides combining to formwater channels, of a deector strip mountable within each frame andhaving semihexagonal bands abutting the borders of the water channelsfor the purpose of completing the -honey comb shape, each deflectorprovided with peaked protuberances disposed in opposite directions andarranged to extend into the semihexagonal grooves of the water channels.

3. In combination, a series of vertically disposed corrugated waterchannels, and a thin metal defleetor mountable between each adjacentpair of water channels, said deiectors provided with cone shapedprotuberances rising from its surface in opposite directions, therebeing provided in the opposed sides of each pair of water channelsseries of pairs of horizontally disposed ribs and so placed thatthe'protuberances arranged along the vertical centerline of thedelectors lodge between each pair of ribs.

4. A deector for a radiator core made from a strip of thin sheet metalalong the edges of which are provided semihexagonal bands and having,between said bands, al-

' ternate series of peaked protuberances projected in oppositedirections in such relation to the bands, that a peak rises directlyinside each hexagonal cavity of each band.

5. In a radiator core of the type described,

the combination with corrugated water channels, of thin sheet metaldeflectors mountable between each adjacent pair of water channels tocomplete a honey comb shape, there being, in/a horizontal plane, apeaked protuberance rising directly inside each hexagonal cavity alongeach edge of a deiector, and a peaked protuberance rising in theopposite direction intermediate to two first named protuberances, theprotuberances being arranged diagonally in opposed alternate seriesextending from a cavity of one edge to the second following cavity ofthe other edge.

6. ln a radiator core, a series of semihexagonal water channels, aseries of intermediate deflectors having semihexagonal edge bandscombining with the water channel sides to Jform a honeycomb structure,said deflectors provided, between the said bands, with three rows ofprojecting cones alternately rightK and left, the middle row engagingAribs of lthe adjacent water channel projections, th outer two rowsprojecting into the adjacent water channel cavities.

In testimony whereof, I have hereunto aixed my signature.

CHAS. F. SPERY.

